On Feb 19, 3:03 pm, James Farrar wrote:
On 19 Feb 2007 06:50:17 -0800, "Boltar"
wrote:

Can't LU make their minds up if they want these or not? It seems they
occilate between having them then not on various train types over the
years. Why have they been taken of the D stock? Seems a bit of a
retrograde step.

They haven't been used for, ooh, seven or eight years now.

When I first moved to London (1997) the doors were only
passenger-controlled in the winter, but after a couple of years they
went to driver control at all times. I know not why. However, TTBOMK,
*no* Underground trains that have passenger-controlled door buttons
actually use them any more.


The total ceasing of use of door buttons seems to coincide with the
opening of the Jubilee Line Extension in 1999, where there are doors
on the platform as well. Presumably there wouldn't be a logical way
of combining the platform doors with passenger control (partially
sited people aware of platform doors opening and walking into closed
train doors etc), and it would be confusing to use them at some
stations but not others on the same line.

I don't know why that necessarily affects other lines or why the
trains for the JLE were built with buttons in the first place.